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MASTER DEVELOPMENT SOFTWARE
The development system is supplied
with Windows-based software that
facilitates communication with the
development boards through the Host
Interface Module. This software allows
for testing and illustrates basic
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transmitter or receiver. The user can
implementation of the modules as a
wireless serial link. The user selects
either a USB or RS232 connection and
whether the connected board is the
Figure 7: Master Development Software
then send text, ASCII characters, and even a picture. Documentation for the
software may be found by going to the 'Help' menu then 'Help File'.
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Data Guides
Application Notes
Knowledgebase
Terminal emulation programs, such as HyperTerminal, do not provide error
correction; therefore, bit errors or data line hashing will be displayed as random
characters. Some form of error detection should be employed when developing
a protocol for wireless environments (please see Application Note AN-00160).
USING THE BOARDS AS A DESIGN REFERENCE
The master development boards included in this kit are very simple, yet they
illustrate some important techniques that you may wish to incorporate into your
own board layout. You will observe that the HP3 mounting pads (SMD version)
extend slightly past the edge of the part. This eases hand assembly and allows
for better heat conduction under the part if rework is necessary. Next, observe
the use of a full ground plane fill on the lower side of the board. This ground
plane serves three important purposes:
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make www.linxtechnologies.com your first stop. Our website is organized in an
intuitive format to immediately give you the answers you need. Day or night, the
Linx website gives you instant access to the latest information regarding the
products and services of Linx. It’s all here: manual and software updates,
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more. Be sure to visit often!
U S B HO S T INTERFACE BOARD
First, since a 1/4-wave antenna is employed, the ground plane is critical to serve
as a counterpoise (you may wish to read Application Note AN-00500 Antennas:
Design, Application, and Performance for additional details on how a ground
plane affects antenna function).
Second, a ground plane will suppress the transfer of noise between stages of a
product, as well as unintentional radiation of noise into free space.
J2
GND GND
U S B-B
GND
DAT+
DAT -
5V
4
3
2
1
GND
GND
1
2
3
4
5
6
7
8
U1
U S BDP
U S BDM
GND
VCC
S U S P_IND
RX_IND
TX_IND
4 8 5_TX
S DM-U S B-Q S - S
RI
DCD
D S R
DATA_IN
DATA_OUT
RT S
CT S
DTR
16
15
14
1 3
12
11
10
9
RX DATA
TX DATA
TR S EL
PDN
GND
GND
1
2
3
4
5
6
7
8
J1
GND
NC
NC
NC
VCC
NC
NC
GND
HIB-DIPMODULE
16
GND
15
NC
14
NC
1 3
RX DATA
12
TX DATA
11
RT S /TR S EL
10
DTR/PDN
9
GND
GND
RX DATA
TX DATA
TR S EL
PDN
GND
Third, a ground plane allows for the implementation of a microstrip feed to the
antenna. The term microstrip refers to a PCB trace running over a ground plane
R S 232 HO S T INTERFACE BOARD
that is designed to serve as a 50-ohm transmission line between the module and
VCC
VCC
the antenna. A microstrip is implemented on this evaluation board. If you are
unfamiliar with microstrip calculations, you may wish to refer to the HP3 Series
Data Guides or the calculator available on the Linx Technologies website.
ABOUT ANTENNAS
The choice of antennas is one of the most critical and often overlooked design
considerations. The range, performance, and legality of an RF link are critically
C 3
3 . 3u F
C4
3 . 3u F
C1
3 . 3u F
+
+
1
2
3
4
5
6
7
8
U1
MAX2 3 2
C1+
V+
C1-
C2+
C2-
V-
T2OUT
R2IN
VCC
GND
T1OUT
R1IN
R1OUT
T1IN
T2IN
R2OUT
16
15
14
1 3
12
11
10
9
+ C2
4.7 u F
GND
TX R S 2 3 2
RX R S 2 3 2
PDN
TR S EL
1
6
2
7
3
8
4
9
5
J2
R S -2 3 2
GND
VCC
GND
1
2
3
4
5
6
7
8
J1
GND GND
NC NC
NC NC
NC RX DATA
VCC TX DATA
NC RT S /TR S EL
NC DTR/PDN
GND GND
HIB-DIPMODULE
16
15
14
1 3
12
11
10
9
GND
RX R S 2 3 2
TX R S 2 3 2
TR S EL
PDN
GND
dependent upon the type of antenna employed. Linx offers a variety of antenna
styles that you may wish to consider for your design. Included with your kit is a
Linx CW Series connectorized whip antenna that should be connected prior to
C5
3 . 3u F
GND
GND
GND
using the kit. Despite the fact that the antenna is not centered on the board’s
ground plane, it exhibits a VSWR of <1.7 and suitably demonstrates the
module’s best practical performance.
Page 8
Figure 8: Host Interface Module Schematics
Page 9
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相关PDF资料
MDEV-900-HP3-PPS-RS232
KIT MASTER 900MHZ HP-3 SIP RS232
MDEV-900-HP3-SPS-USB
KIT MASTER 900MHZ HP-3 USB SMD
MDEV-900-NT
TRM 900 NT MASTER DEV SYSTEM
MDEV-GPS-SG
KIT MASTER DEV GPS SG SERIES
MDEV-GPS-SR
KIT MASTER DEV GPS SR SERIES
MDEV-LICAL-HS-ES
KIT MASTER DEV HS ES RF MODULES
MDEV-USB-QS
KIT DEV MASTER USB QS SERIES
MF11-0010005
THERMISTOR NTC 100OHM -+5% PROBE
相关代理商/技术参数
MDEV-900-HP3-PPS-RS232
功能描述:KIT MASTER 900MHZ HP-3 SIP RS232 RoHS:否 类别:RF/IF 和 RFID >> RF 评估和开发套件，板 系列:HP3 标准包装:1 系列:- 类型:GPS 接收器 频率:1575MHz 适用于相关产品:- 已供物品:模块 其它名称:SER3796
MDEV-900HP3PPS-RS232
功能描述:射频开发工具 HP-3 Master Dev Sys Pinned, RS232 Module
RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V
MDEV-900-HP3-PPS-USB
功能描述:射频开发工具 HP-3 Master Dev Sys Pinned, USB Module
RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V
MDEV-900-HP3-SPS-RS232
功能描述:KIT MASTER 900MHZ HP-3 RS232 SMD RoHS:是 类别:RF/IF 和 RFID >> RF 评估和开发套件，板 系列:- 标准包装:1 系列:- 类型:GPS 接收器 频率:1575MHz 适用于相关产品:- 已供物品:模块 其它名称:SER3796
MDEV-900HP3SPS-RS232
功能描述:射频开发工具 HP-3 Master Dev Sys SMD, RS232 Module
RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V
MDEV-900-HP3-SPS-USB
功能描述:射频开发工具 HP-3 Master Dev Sys SMD, USB Module
RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V
MDEV-900-NT
功能描述:射频开发工具 NT Series Dev kit w/ Transparent module
RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V
MDEV-900-TT
制造商:Linx Technologies Inc 功能描述:TRM 900 TT MASTER DEV SYSTEM 制造商:Linx Technologies Inc 功能描述:RF Development Tools TT Series Master Development System